import rclpy
from rclpy.node import Node
from std_msgs.msg import String

class MyNode(Node):
    def __init__(self):
        super(). __init__("zhenkeng_py",namespace="zuoxie_py")
        self.pub=self.create_publisher(String,"/shi",10)
        self.pub=self.create_publisher(String,"kaihui",10)
        self.pub=self.create_publisher(String,"~/vip",10)

def main():
    rclpy.init()
    rclpy.spin(MyNode())
    rclpy.shutdown()
if __name__=='__main__':
    main()